after a few drinks he was beginning to speak thickly.
Examples of thickly
thickly
Cook for a couple of minutes more, then thickly slice the potatoes into the pan.
From the expressandstar.com
The sauce thickly coats all the seafood, the spices flick the tip of the tongue.
From the sfgate.com
Drain, thickly slice and return them to the stove, this time over a gentle heat.
From the guardian.co.uk
It was rich with bacon and thickly creamy, and popped with crunchy corn kernels.
From the thenewstribune.com
Thickly cut and very large, steaks are often shared between two or more persons.
From the en.wikipedia.org
Rotting, gum-covered benches had given way to thickly varnished, unstained pine.
From the npr.org
Kandy is located in the mountainous and thickly forested interior of the island.
From the en.wikipedia.org
She speaks without a trace of the accent that thickly marks her parents'speech.
From the washingtonpost.com
Spread some black beans mixture thickly onto each base, followed by some salsa.
From the jsonline.com
More examples
Spoken with poor articulation as if with a thick tongue; "after a few drinks he was beginning to speak thickly"
Densely: in a concentrated manner; "old houses are often so densely packed that perhaps three or four have to be demolished for every new one built"; "a thickly populated area"
With a thick consistency; "the blood was flowing thick"
With thickness; in a thick manner; "spread 1/4 lb softened margarine or cooking fat fairly thickly all over the surface"; "we were visiting a small, thickly walled and lovely town with straggling outskirt"
Thick: in quick succession; "misfortunes come fast and thick"